HK1056740A1 - Method and apparatus for pyrolysis - Google Patents
Method and apparatus for pyrolysis Download PDFInfo
- Publication number
- HK1056740A1 HK1056740A1 HK03109194A HK03109194A HK1056740A1 HK 1056740 A1 HK1056740 A1 HK 1056740A1 HK 03109194 A HK03109194 A HK 03109194A HK 03109194 A HK03109194 A HK 03109194A HK 1056740 A1 HK1056740 A1 HK 1056740A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- temperature
- dioxin
- cooling
- liquefied
- thermal decomposition
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
- B01D53/70—Organic halogen compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/02—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by distillation
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/10—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/301—Treating pyrogases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Gasification And Melting Of Waste (AREA)
- Chimneys And Flues (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
A method for pyrolysis, characterized in that a material to be treated is heated to a temperature lower than the decomposition temperature of dioxins and the resulting gaseous components are cooled and liquefied; and an apparatus for practicing the method comprising a heating means (1) and a cooling and liquefying means (2) for the gaseous components formed by the above heating. The method can be employed for pyrolyzing a material to be treated with safety and at a lower cost as compared to a conventional method for pyrolysis.
Description
Technical Field
The present invention relates to an incineration method, another thermal decomposition method, and an apparatus therefor, which are cheaper and safer than conventional ones.
Background
Conventionally, when plastics and the like containing chlorides are incinerated in an incineration disposal site, dioxin having a high toxicity is often generated if the combustion is incomplete.
Since this dioxin exerts a great adverse effect on the environment when it is discharged into the atmosphere, it is necessary to raise the temperature to 800 ℃ or higher at which the dioxin is decomposed and eliminated during incineration.
However, the incinerator is resistant to such high temperatures, and therefore, the material is very expensive.
Accordingly, the present invention provides a thermal decomposition method and apparatus which are less expensive and safer than conventional ones.
Disclosure of Invention
In order to solve the above problems, a thermal decomposition method according to the present invention is characterized in that a treatment object is heated to a temperature not higher than a decomposition temperature of dioxin, and a vaporized component generated thereby is cooled and liquefied.
According to this thermal decomposition method, although there is a possibility that dioxin may be generated because the object to be treated is heated to a temperature not higher than the decomposition temperature of dioxin, the generated vaporized components such as dioxin are cooled and liquefied, and thus are not released into the atmosphere. That is, even if the heat treatment is performed at a temperature lower than that of the conventional one, dioxin is not discharged into the atmosphere.
The thermal decomposition forms are: combustion in which the object to be treated is combined with oxygen, fractionation in which supply of oxygen is controlled, and the like.
The components that cannot be liquefied during the cooling liquefaction may be reheated together with the object to be treated during the heating.
With this configuration, the non-liquefiable component is heated again to liquefy the component, and the reprocessing is continued, whereby all the objects to be processed can be accurately processed.
The thermal decomposition apparatus of the present invention is characterized by comprising a heating device and a cooling/liquefying device, wherein the object to be treated is heated by the heating device to a temperature not higher than the decomposition temperature of dioxin, and the vaporized component thus generated is liquefied by the cooling/liquefying device. The thermal decomposition apparatus has the same function as the thermal decomposition method described above.
Drawings
FIG. 1 is a system flow diagram illustrating an embodiment of the pyrolysis method and apparatus of the present invention.
Detailed Description
The thermal decomposition device of this embodiment is an incineration device for incinerating a treatment object.
As shown in fig. 1, the incineration apparatus (thermal decomposition apparatus) includes a heating apparatus 1 (e.g., an incinerator) and a cooling liquefaction apparatus 2 (e.g., a condenser). The thermal decomposition method is a thermal decomposition method in which the object to be treated (object to be incinerated) is heated to a temperature not higher than the decomposition temperature of dioxin (about 400 ℃) by the heating device 1 (incinerator), and the gasified component generated thereby is liquefied by the cooling and liquefying device 2 (condenser). The cooling fan 3 and the cooling water fan 4 are connected to the condenser.
The gasified component that is not liquefied at the time of cooling liquefaction is returned to the heating apparatus 1 (incinerator) by the induction apparatus 5 (for example, induction fan) and reheated together with the object to be treated during heating. Further, the cooled and liquefied components are recovered in the tank 6, and then introduced into the distillation column 7 to be fractionated, and the usable components among the respective components obtained by the fractionation are reused.
According to the thermal decomposition apparatus and the thermal decomposition method, since the object to be treated (object to be incinerated) is heated to a temperature not higher than the decomposition temperature of dioxin (about 400 ℃), there is a possibility that dioxin is generated, and the generated vaporized components such as dioxin are liquefied by the cooling and liquefying apparatus 2 (condenser), and thus are not discharged into the atmosphere.
That is, dioxin is not discharged into the atmosphere even if the heat treatment is performed at a lower temperature (about 400 ℃) than before. Therefore, the method has the advantages of no need of high-temperature-resistant high-price cooling equipment, low price, safety in no emission of dioxin to the atmosphere and the like.
In addition, it is not necessary to raise the temperature to 800 ℃ or higher at which dioxin is decomposed or disappears, and it is not necessary to use a special material resistant to such high temperature, and the durability can be extended.
Since the components that cannot be liquefied during cooling and liquefaction are returned into the heating apparatus 1 (incinerator) and reheated together with the object to be treated (object to be incinerated) during heating, there is an advantage that the entire object to be treated can be reliably treated by continuing the reprocessing.
Possibility of industrial utilization
The present invention is configured as described above, and it is possible to provide a cheap and safe thermal decomposition method and apparatus thereof, since dioxin is not released into the atmosphere even if heat treatment is performed at a temperature lower than that of the conventional method. Therefore, the present invention is useful as an inexpensive and safe heat treatment method and an incinerator for a treatment object when incinerating a treatment object such as a chloride-containing plastic.
Claims (2)
1. A thermal decomposition method characterized by heating a treatment object to a temperature not higher than the decomposition temperature of dioxin, cooling and liquefying the vaporized component produced thereby, fractionating the cooled and liquefied component, and reusing each of the components obtained by fractionation, wherein the vaporized component that cannot be liquefied during cooling and liquefaction is reheated together with the treatment object being heated.
2. A thermal decomposition apparatus is characterized by comprising a heating device for heating a treatment object to a temperature not higher than the decomposition temperature of dioxin to thereby generate a vaporized component, a cooling and liquefying device for liquefying the vaporized component, and a fractionating device for fractionating the cooled and liquefied component, wherein the respective components obtained by fractionation are reused, and the vaporized component which is not liquefied at the time of cooling and liquefying is reheated together with the treatment object under heating.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP223813/2000 | 2000-07-25 | ||
| JP2000223813A JP3393380B2 (en) | 2000-07-25 | 2000-07-25 | Pyrolysis method and apparatus |
| PCT/JP2001/002654 WO2002008326A1 (en) | 2000-07-25 | 2001-03-29 | Method and apparatus for pyrolysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| HK1056740A1 true HK1056740A1 (en) | 2004-02-27 |
| HK1056740B HK1056740B (en) | 2007-06-08 |
Family
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Also Published As
| Publication number | Publication date |
|---|---|
| KR100492117B1 (en) | 2005-06-01 |
| US20030109762A1 (en) | 2003-06-12 |
| JP2002249617A (en) | 2002-09-06 |
| JP3393380B2 (en) | 2003-04-07 |
| WO2002008326A1 (en) | 2002-01-31 |
| CA2417153A1 (en) | 2002-01-31 |
| KR20030040230A (en) | 2003-05-22 |
| CN1289582C (en) | 2006-12-13 |
| CN1444622A (en) | 2003-09-24 |
| AU2001244629A1 (en) | 2002-02-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20110329 |